sending SMS in j2me

Code:

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public boolean sendSms(String number, String message){
        boolean result = true;
        try {
          //sets address to send message
          String addr = "sms://"+number;
          // opens connection
          MessageConnection conn = (MessageConnection) Connector.open(addr);
          // prepares text message
          TextMessage msg = (TextMessage)conn.newMessage(MessageConnection.TEXT_MESSAGE);
          //set text
          msg.setPayloadText(message);
          // send message
          conn.send(msg);
          conn.close();
        } catch (SecurityException se) {
            // probably the user has not allowed to send sms
            // you may want to handle this differently
            result = false;
        } catch (Exception e) {
            result = false;
        }
        return result;
    }

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Hi guys,
this is what I use in my application to send SMS. It does work but it odes not always return TRUE. Where do you think might me the error?
Thank you.

Can you pinpoint any consistencies when False is returned?